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I have maintained a commercial website for about 5 years, learning as I go. I recently decided to totally revamp the site using CSS and was rather excited discovering its power. I am now using HotDog 6 as my development system and Paint Shop Pro 7 for graphics. Having used IE 5 as I ramped up the CSS learning curve, I decided to see how the code behaved in NetScape 4.5 and was greatly disapointed seeing how poorly it behaved.

Any suggestions for an easier way to go or do I need to tediously test everything as I go.

Like HTML and Javascript, there are varying degrees of support among the browsers. NS4 has poor support for CSS. You have a few options. 1) You could search these forums (this comes up about once a week) and then post specific questions on what you can't find or 2) download a shareware program like stylemaster (www.westciv.com) which helps in creating style sheets and illustrates what's supported by what browser and what isn't.